1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 obt/bsearch.h for the Openbox window manager
4 Copyright (c) 2010 Dana Jansens
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 See the COPYING file for a copy of the GNU General Public License.
19 #ifndef __obt_bsearch_h
20 #define __obt_bsearch_h
26 #define BSEARCH_SETUP(t) \
27 register t l_BSEARCH, r_BSEARCH, out_BSEARCH;
29 #define BSEARCH(t, ar, start, size, val) \
31 l_BSEARCH = (start); \
32 r_BSEARCH = (start)+(size)-1; \
33 while (l_BSEARCH <= r_BSEARCH) { \
34 /* m is in the middle, but to the left if there's an even number \
36 out_BSEARCH = l_BSEARCH + (r_BSEARCH - l_BSEARCH)/2; \
37 if ((val) == (ar)[out_BSEARCH]) { \
40 else if ((val) < (ar)[out_BSEARCH]) \
41 r_BSEARCH = out_BSEARCH-1; /* search to the left side */ \
43 l_BSEARCH = out_BSEARCH+1; /* search to the left side */ \
47 #define BSEARCH_FOUND() (l_BSEARCH <= r_BSEARCH)
48 #define BSEARCH_AT() (out_BSEARCH)